Take control of your Audi C8 4.0TT by unlocking thrilling power and acceleration from your phone! Our cutting-edge engine and transmission tunes transform your car through the innovative POWER link Bluetooth dongle that plugs into your vehicle's OBD II port. Our responsive mobile app links the dongle to your Apple or Android phone, giving you the power to tune your car, change octanes, upgrade stages, perform diagnostics, monitor live gauge data, and more —all from the palm of your hand!
iE Stage 1 C8 EA825 ECU calibration dramatically increases hidden performance with up to 828HP and 862ft-lbs! iE's advanced tuning platform releases hidden power, maximizes the drive feel, boost delivery, throttle response, and powerband to completely transform your 4.0TT engine into a supercar powerhouse. Engineered to operate on entirely stock hardware or with an upgraded intake and intercoolers for the most performance.
See performance tab for full performance results & dyno reports
For the serious horsepower junky, iE's Hybrid Turbo Tuning Suite has been designed for use with the bolt-in Pure900 turbochargers. Unlock supercar-level power and torque with remarkable transient response, minimal turbo lag, and an exhilarating pull all the way to the redline. This new power curve completely transforms your C8 4.0TT with true supercar power levels while maintaining everyday comfort during your daily drives.
Upgrading from stock turbo to hybrid upgrade is simple with iE! You only pay the price difference between the tunes with no additional fees. Once you've installed the necessary matching hardware, just follow the instructions on your POWERlink app to purchase the tune upgrade, and you'll be outperforming the competition in minutes!
Flashing the E85 fuel map allows easy fill-ups at the pump without mixing ethanol blends. This ethanol calibration delivers a massive increase in power over regular 91/93 pump gas while keeping mid-range power in check with the factory direct injection (DI) system and avoiding lean conditions, misfires, and power loss. E85 offers amazingly fast and consistent power delivery from the pump and is much less expensive than race gas.
Ethanol files are not available with Pure900 Turbo Tuning.
Ready to experience an absolute torque monster!? Mixing regular 91/93 pump gas and E85 at a 40% ethanol content (E40) creates a blend that stays within the safe limit of fuel delivery for the factory injectors. This allows the E40 calibration to produce the full torque output available from the twin-turbo V8, resulting in an insane 862ft-lbs of torque that translates to a pull with seat slamming g-forces.
An ethanol content sensor kit is highly recommended for blending E40.
In areas that do not have readily available ethanol or track enthusiasts with accessable race fuel pumps, the included 104-octane race gas file also succeeds in a considerable jump in power over regular pump gas. Sunoco GT260 Plus 104 octane is used to develop this tune and is highly recommended for the best results .
104 Octane option included with Stage 1 and Pure 900 Hybrid.
Commonly used in roll racing, Brake Boosting allows you to build extra boost by applying brake pressure while accelerating. Release the brake pressure for a "rolling launch" or extra surge of power.
Brake Boost is included on all tune stages.
Even with the best tuning, unreliable fuel and mechanical failures still pose a risk to any engine. iE AutoProtect is your last line of defense against engine damage. If trouble pops up, AutoProtect lowers boost and power to keep your engine safe against damage. When conditions return to normal, power automatically restores. Our unique error code is triggered so we can help pinpoint the problem . LEARN MORE
AutoProtect is included on all stages
iE 4.0TT tuning suites are designed to work seamlessly with optional or required hardware options. While Stage 1 doesn't require any hardware upgrades, adding our intake, turbo inlet, and intercooler upgrades will result in increased airflow, lower intake air temperatures, and quicker heatsoak recovery for additional power increases.
| PART UPGRADE | STAGE 1 | PURE900 |
|---|---|---|
| AIR INTAKE | OPTIONAL (recommended for most power) | REQUIRED |
| TURBO INLET PIPES | OPTIONAL | REQUIRED |
| INTERCOOLERS | OPTIONAL (highly recommended) | REQUIRED |
| CATBACK EXHAUST | OPTIONAL | OPTIONAL |
| HYBRID TURBOS | NOT COMPATIBLE | PURE900 REQUIRED |
| 4 BAR MAP SENSORS (X4) | NOT COMPATIBLE | REQUIRED |
North American Region (NAR) = AKI / Rest Of World (ROW) = RON
| STAGE / FUEL | HORSEPOWER | TORQUE |
|---|---|---|
| Stock Audi advertised numbers (RS6/RS7) | 591 HP | 590 FT-LBS |
| Stock IE dyno numbers (RS6/RS7) | 591 HP | 616 FT-LBS |
| Stage 1 91 AKI / 95 RON | 668 HP | 768 FT-LBS |
| Stage 1 93 AKI / 98 RON | 690 HP | 780 FT-LBS |
| Stage 1 104 AKI / 108 RON | 800 HP | 821 FT-LBS |
| Stage 1 E85 | 800 HP | 745 FT-LBS |
| Stage 1 E40 | 828 HP | 862 FT-LBS |
| Pure900 91 AKI / 95 RON | 771 HP | 795 FT-LBS |
| Pure900 93 AKI / 98 RON | 800 HP | 824 FT-LBS |
| Pure900 104 AKI / 108 RON | 903 HP | 866 FT-LBS |
Dyno numbers are for reference against stock numbers only. Personal dyno results will vary depending on fuel quality, local conditions, dyno brand, and correction factors.
" This thing is a beast -Matthew W.
" Massive acceleration -J. Smith
" Unbelievable -Hank D.
Important Notes: - 2024 model years are equipped with a new ECU version and are not currently compatible. Our calibration team is working on expanding to the new ECU type. No ETA is presently available. - Audi is currently implementing new security patches on the ZF8 transmissions that are being mated to the EA825 4.0T engine. These security patches are not specific to any particular model or year of vehicle. These security patches have not been fully cracked by the aftermarket and the cars require additional work for iE's calibrators to flash. If your car has this rare combination, you may experience a brief wait period to flash while our calibrators bypass the security patch. - Not compatible with euro6 particulate emissions ROW (Rest Of World) GPF equipped vehicles.
Please read before ordering. Eurosport Performance does not carry live inventory on this site. Most products are ordered for you directly from the manufacturer or our suppliers, and we follow their lead times. Placing an order confirms you have read and accepted the availability terms below.
| In stock
Ships within 24 to 48 hours
Products marked in stock are on our shelves in Montreal and leave within one to two business days.
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Ordered for you
Most orders ship in 5 to 7 business days
Everything else is ordered from the manufacturer or supplier when you order. Delays can occur; if they do, we contact you.
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Supplier lead times apply
If a product is not listed as in stock here and is on backorder at the manufacturer, it will most likely be on backorder for us too. We will tell you as soon as we know.
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We keep you informed
You receive a confirmation when the order is placed, a notice if a delay comes up, and tracking the moment it ships.
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Only products explicitly marked in stock are on our shelves. For everything else, the fastest way to know the current lead time is to ask us before you order; we check with the supplier and reply with a date.
Confirmed means we have placed the order with the manufacturer or supplier on your behalf. Shipping follows once the part reaches us or ships directly to you, usually within 5 to 7 business days for products that are available at the source.
We tell you as soon as the supplier confirms it, with the expected date when they give one. You can keep the order open, switch to an alternative we suggest, or cancel for a full refund before the part ships.
Yes. Any order that has not shipped can be cancelled by contacting us, and the refund goes back to your original payment method. Please contact us rather than opening a dispute with your bank: a cancellation takes us minutes, a chargeback takes weeks and freezes the refund in the meantime.
Sometimes. Larger or special-order items can ship to you directly from the supplier to save days in transit. You still receive tracking from us either way.
Orders ship from Montreal or directly from our suppliers. For Canadian addresses the price you pay is the price, with no import or duty fees added on delivery. See our shipping policy for details.
You get an email with the tracking number the moment the label is created, and you can follow the order in your account on the site or in the SPECD app.
Want a lead time before you order? Email us or use the contact page with the product name and your vehicle, and we will confirm availability with the supplier.
Products are warrantied by their manufacturer. Eurosport Performance is an authorized reseller: every part we sell is covered by the manufacturer's own warranty, with its own terms and duration. Claims go through us, so you deal with Eurosport Performance rather than a form on the brand's site, but whether a claim is accepted is the manufacturer's decision.
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Manufacturer terms apply
Duration and coverage are set by the brand and differ from one to the next: some cover one year, some a lifetime, some only the original purchaser. The brand's warranty page is the reference; ask us if you cannot find it.
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We file the claim for you
Contact us with your order number, photos and a description of the issue. We open the claim with the manufacturer, follow it up, and arrange the repair, replacement or credit they approve. The manufacturer decides whether the claim is accepted.
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Fitment guarantee: North America only
We guarantee fitment for vehicles sold in the North American market. Vehicles from other markets are out of scope; specifications differ, and it is the customer's responsibility to confirm compatibility before ordering.
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No warranty on tuning files
ECU and TCU tunes and other software files are sold without warranty and are not returnable once delivered or flashed. Tuning can affect your vehicle's factory warranty; please read the brand's terms before purchasing.
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Proof of purchase
Your Eurosport Performance order is the proof of purchase every manufacturer asks for. Keep the order confirmation; it is also in your account on the site and in the SPECD app.
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What is usually not covered
Damage from improper installation, modification, abuse, racing or an incorrect application for the vehicle, and normal wear items such as pads, clutch discs and filters. Shipping and labour are covered only when the manufacturer's terms say so.
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It is the manufacturer's warranty for that product. Where the brand publishes it, we note it in the description; otherwise contact us before ordering and we will confirm the exact terms with them.
Stop using it if it is a safety-related part, then contact us with your order number, clear photos, and when and how the issue appeared. Do not return anything until we confirm the claim; manufacturers often require an inspection or an authorization number first.
The manufacturer. We prepare and submit the claim, provide the proof of purchase and push for a fair outcome, but acceptance, replacement or credit is their call under their terms. We pass their decision on to you as soon as we have it.
It depends on the manufacturer. Simple cases are approved in days; claims that need the part inspected can take a few weeks. We keep you updated at each step and push when it drags.
No. Tuning files are software; once delivered or flashed they cannot be returned, and they carry no warranty from Eurosport Performance or, in most cases, from the tuner. Support for the tune itself (revisions, flashing questions) comes from the tuning brand under its own terms.
No. Our fitment guarantee covers vehicles sold in the North American market only. European, Japanese and other market vehicles can differ in engines, electronics and dimensions, and a part listed for the North American model is not guaranteed to fit. If you order for one of these vehicles, confirming compatibility is your responsibility, and fitment issues on such vehicles are not covered by returns or warranty.
Labour is not covered unless the manufacturer's terms specifically include it. Having the part installed by a qualified shop protects your claim: improper installation is the most common reason a manufacturer declines.
No. Returns cover unused parts you no longer want, under our refund policy. Warranty covers a part that fails in use, under the manufacturer's terms. If you are unsure which applies, contact us and we will point you to the right one; please do not open a bank dispute, as it pauses both processes.
Questions about coverage before you buy? Email us with the product and your vehicle and we will confirm the manufacturer's terms.
